Reverted Gear-Train

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Reverted Gear-Train

Reverted Gear-Pairs

Schematic of Reverted Gear-Train

Schematic of Reverted Gear-Train.

Reverted Gear Train: include:

two Gear-Pairs

two shafts

the input and output shafts are co-axial

It is a Compound Gear with, two Gears-Pairs, and a special condition that makes the total number of teeth of the first gear-pair equals the number of teeth of the second-gear-pair, when the module is the same.

The image to the left shows a schematic of a Reverted Gear-Train. There is more than one gear-pair, two shafts, and the input and output shafts are co-axial.

Therefore, it agrees the definition of the Reverted Gear Train.

See Also: Simple Gear-Pair, Simple Gear-Trains, Planetary Gear-Trains


Reverted Gear Train – Stage 1


Start with a Gear-Pair  - see Option 1 Step 14.1

External Mesh


T1=30Red-14-1b, T2=70Red-14-2. The Gear Ratio is T1/T2 = 2.5

The total number-of-teeth is 100T.


Reverted Gear Train – Stage 2


1.Mechanism-Editor: Edit the Base-Part

2.Part-Editor: Geometry toolbar: Add Line, Drag from the end-Point of the Line-of-Centers of Gear-Pair 1

3.Merge its start-Point with end-Point of the Line in Base-Part

4.Part-Editor: Add Dimension to the new Line. Exit Part-Editor.

5.Mechanism-Editor: Add a new Part.

6.Mechanism-Editor: Add Pin-Joint - click end-Point of new Line and origin new Part.


Add the second Gear-Pair.

1.Mechanism-Editor: Add Gear-Pair

2.Add Gear-Pair: Line 1: Click the CAD-Line in the Driven Geared-Rocker as the first Gear-Pair

3.Add Gear-Pair: Line 2: Click the CAD-Line in the new Blue Part

4.Add Gear-Pair: Line 3 : Click the new Line and then the dimension of the Line.

5.Mechanism-Editor: Edit the Base-Part:

6.Part-Editor: Add Horizontal to the new Line. Exit Part-Editor.

Video of Reverted Gears - Click to Play

Edit the Gear-Pair 2

Edit the Number of Teeth:

Gear 1 = 20

Gear 2 = 80


See Video to the left to see the gear reduction of the Gear-Pair. - Probably in error.